Biology - Cell Cycle And Mitosis 0910

Asexual Reproduction

Sexual Reproduction

Growth and Development

Embryonic Stem Cell

A chicken has 78 Chromosomes in its Somatic Cells:

• How many chromosomes did the chicken inherit from each parent?

• How many chromosomes are in each of the chicken’s gametes?

• How many chromosomes will be in each somatic cell of the chicken’s offspring?

• How many chromosomes are in a “set”

• Which came first…chicken or egg?

How many chromosomes are shown in this diagram? How many chromatids are shown?

Stages of Mitosis

Interphase

Prophase

Metaphase

Anaphase

Telophase

Number of cells Total

Stem Cells II

Embryonic Stem Cells (ES)

In Vitro Fertilization

Louise Brown – Birthday 1978

Nuclear Transfer

Adult Stem Cells

Induced Pluripotent Stem Cells (iPS)

Science NOW – Stem Cells

Uncontrolled Growth

Angiogenesis

Apoptosis

“Immortal Cells”

Telomerase

Metastasis

Immune System

T-Cells and B-Cells

Question 1

• A: What is the role of mitosis and meiosis in the human life cycle. Please be specific.

• B: What is the difference from sister chromatids and homologous chromosomes?

• C: Does a tumor metastasizing relate more to anchorage dependance or density-dependent inhibition? Explain.

• D: For a cell 2n=24. How many chromosomes would be in a cell:

D1: After Mitosis?D2: In a gamete of this organism?D3: In a cell after meiosis I?D4: After meiosis II?

Question 2• If this is a cell

undergoing mitosis• A: What stage is this cell in?• B: Would you find the

homologous Chromosome to chromosome 1, at 2 or 3…explain.

• C: What stage precedes this image?

1 2

3

Question 3

• A:Which cell(s) has the spindle comletely formed?• B:Which cell’s DNA is entirely in the form of chromatin?• C:If these were human cells which cell(s) would have 46

chromosomes?• D: In which cells are sister chromatids connected by a

centromere?

1 2 3

Question 4

• A: Which Cell is in metaphase II?• B: In stage 5, what is being seperated from each other?• C: Immediately after stage 6 is the DNA replicated?• D: Are these stages listed in chronological order?• E. Assuming that this is a human cell, are the cells produced by stage 6

haploid or diploid? Explain.

1 2 3

4 5 6

Question 5• A: What stage of the cell cycle

or mitosis is represented by 1?• B: How would you describe the

DNA in 2? Please be specific.• C: Which stages are

represented from 3?– Prophase

– Anaphase

– Anaphase I

– Anaphase II

– Metaphase II

1

2

3

Question 6

• A: What is the name of structure 2?

• B: Is structure 3 a kinetochore or non-kinetochore microtubule?

• C: What is the blue thing in this image?

2

1

3

Question 7

• What specific events could create gametes as shown in the image below?

Question 8

• Please Order the cells of the cell cycle shown in order of sequence…the earliest first.

1

2

3

4

5